Automatic trap.



.Nimm

w/EES #am M E. R. HAWLEY.

AUTOMATIC TRAP. APPLICATION FILED Nov` 5. 1914.

1,149.91 5. Patented Aug. 10, 1915.

24 SHEETS-SHEET 2.

WIr/VESSES I H43. UCM/@L I Zaafjzwe By AoH/I/Eys stars Encan nav nawLnY,or santillana CITY, uns;

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messia To all'fwhom t may concern:

Be it known thatI, Allnean R. HAWLEY, acitizen of the VUnited States,and a residentr of. Salt Lake City,fin`the county of Salt Lake and`State of Utah, haveinvented certain new4 and useful improvements 1nAutomatic Traps, of which the following is a specilication.

My invention relates to' steam systems, as for heating and otherpurposes, yand the main object is to provide means for automaticallyproducing a vacuum in the pipes of such systems without the necessityfor the pumpsl at present employed. t

further object is to Vprovide means Vfor producing this result by meansof the water of condensation, as from radiators, coils, condensingunits, etc.; and further objects are to provide such deviceswhich arevery simple in construction, readily installed new or existingfsystems,entirely automatic in operation, requiring norpumpingmeehanism, highlyeliicient, operative at the mo` ment of need, composed of but 'few partsnot likely toget out of order to require repair, and very inexpensive.

My invention is. fully described in the fol@ lowingv specification, ofwhich the accompanying drawings-form a part, in which the separate partsare designated by the same reference characters in eachof the views, andin which Figure lis a longitudinal, vertical, section taken through atrap constructed in accordance with my invention, with Vthe parts in thepositions of one stage of the operation; and Fig. Q is a similar viewwith the parts in another stage, y Y

ln the drawings forming a partof this application l have illustrated oneformiof vembodiment of my invention, comprising 'a tank o into which thereturn pipet of a steam system. deposits the water of condensation, acheck-valve 5 being provided inV the tank 3 backwardly through the pipe4,.

and the check-valve 9 preventing the backing up of fluids from the pipe8 to the tank 3, and this checkevalve is of such Vform as t0,Specification of Letters Patent.

lf'atented 16,

`applicati@'mea November 5,1914. ser-m1 m1870504. f

resist the weight of thei'water in the tank 3 at all times.

lArranged within the tank 3, `at one end thereof, is an aircompressionchamber 11 -having a U-shaped pipe 12 at thebottom thereof and v'whichpipe is formed rinto a nozzle 13 at its outer end and which nozzle isdirected inwardly of the tank 3, and at the other end of said tank is :afloat chamher 141 having a float l5 therein which carries a rod 16thereover and tothe upper end of which is connected'a valve 17 normallyclosing steam inietport 18 between the steam pipe 7 and the tank 3, andl may also employ a supplemental float 19 torassist the float 15 toraise said valve 17 from its seat, but'the latter float 19`is notconnected Vwith the valve steam 16, merely bearing against the underside of a stop 2O thereon in the Vraising roperation of the valve 17,and it will be noted'that theiioat lchamber 14 eX- tends well toward thetop ofthe tank 3, for reasons Alater explained.

imprisoned, by. means of-a casing 21beneathfthefloat chamber 14E `is aoat 22 system passing into said tank through the water iny the tankrises and raises thefloat 22 until the valve 23 thereon shuts the port24 in the Chamber 14 this chamber being of courseV empty at thisltimegthe air compre-s'- sion chamber 11 is free from water also at thistime, but vsome water remains in' thev nozzle pipe 12t`o form an air',seal, and-the Water in the tank?) continues to rise until it reachesthe-top of the float chamber 14 and' into which it begins to flow,thereby raising `the float 15 and lifting the valve l17 Vfrom its seat.Live steam from the boiler is now free to enter the tank 3 from the pipe7 and, when the pressure therein is sufliciently great, approximatelythat of the pressure within the boiler,the check-valve`9 is opened andthe water inthe tank 3 begins to escape. rlhis steam pressure alsoforces waterr capes, the valve 17 is closed and the steam is preventedfrom entering the tank-3. T he tank is', at'thisv time, still filledwith thev live steam but no longer under pressure from the boiler and,thus, not of sufiicient pressure to resist the expansion of the aircompressed within the chamber 11, this expansion forcing the water insaid rchamber 11 and in the pipe 12 thereoutof, preferably in a .finespray directed over a considerable area of the tank 8 and whichimmediately condenses ther steam within the tank 3 and thereby causes avacuum therein which is also caused in the return pipe 4 of the steamsystem, and live steam is thus drawn through the system, the tank 3again fills, and the operation is repeated as long as the steam is on.

The supplemental float 19 may or, may not be provided, as its use willdepend upon the resistance of the steam within the pipe 7, and it willbe noted that this float may fall with the water without any effect uponthe valve 17, this valve only being lowered when the lioat chamber 14 isemptied upon the opening of the port in the bottom thereof; in thedrawings I have indicated the normal positions ofthe check-valves 5 and9 bythe reference characters and y, respectively, although thesepositionswould have'been clearly understood by anyone skilled in the artto which my invention appertains, and, as stated, any suitable type ofcheck-valve may be employed providedthat they operate in the mannerdescribed.

lVhile have shown a present preferred combinationof elements producingthe desired result, I do knot limit myself thereto, as many other formsthereof may be des` signed which will incorporate the principles yinvolved `and be as efficient as the form shown, or, possibly, more so,which will not vbe a departure'from the spirit of.my inven tion, or`which willnot sacrifice its ad-y vantages.

Having fully described my invetnion, what I claim as. new, and desire tosecure by Letters Patent, is f 1. In combination with the return pipe ofva steam system, a steam-tight tank having a chamber therein ofrelatively small diameter, open at its top, a discharge pipe and a steaminlet pipe for sa-id tank, a float 'in said chamber, a valve for saidsteam inlet carried by said float, means for condensing steam in saidtank v'to produce a vacuum therein, andmeans for preventing thefupwardmovement of said float and valve until the accumulated water ofcondensation in said tank overflows the top of said chamber.

2. In combination with the return pipe of a steam system, a steam-tighttank having a chamber therein of relatively small diameter, open at itstop, a discharge pipe and a steam inlet pipe for said tank, a float insaid chamber, a valve for said steam inlet carried by said float, meansfor condensing steam in said tank to produce a vacuum therein, and meansfor preventing upward .movement of said float to actuate said valveuntil the water of condensation voverflows the top of said chamber, saidchamber having a port in the lower end thereof, and said meanscomprising a supplemental float and a valve thereon adapted to closesaid port to prevent the accumulating water of condensation fromentering said chamber.

3. In combination with the return pipe of a steam system, a steam-tighttank having a chamber therein of relatively small diameter, open atitstop, a discharge pipe and a steam inlet pipe for said tank, a fioatin said chamber, a valve for said steam inlet carried by saidy iioat,means for condensing steam in said tank to produce a vacuum therein,means for preventing the upward movement of said lioat and thevalve'until the accumulated water of condensation in said tank overflowsthe top of said chamber, and a supplemental float for insuring valveoperation in the event 'of said first named float being renderedinoperative.

In testimony wherof I have signed my name to this specification in thepresence of two subscribing witnesses.

EDGAR RAY HAWLEY.

Witnesses:

FRANK W. WILLIAMS, MARGUERITE A. KLoTz.

Copies of this patent maybe obtainedfor five cents each, by addressingthe Commissionerk of Patent Washington, D. C.

